Improvement in slate-frames



Enron.

FRANCIS SHENTON, OF SLATINGTON, PENNSYLVANIA.

IMPROVEMENT IN SLATE-FRAIVI ES.

Specification forming part of Letters Patent No. 53,495, dated March 27, 1866.

To all whom fit may concern:

Be it known that I, FRANCIS SHENTON, of Slatington, Lehigh county, State of Pennsylvania, have invented certain new and useful Improvements in Slate-Frames; and I do hereby declare thefollowing description and accompanying drawings are suicient to enable any person skilled in the art or science to which it most nearly appertains to make and use my saidinvention orimprovements without further invention or experiment.

The nature of my invention and improvements consist in uniting or joining the corners ofthe frame by means ot' a tongue and groove and a dowel, the whole being tirmly glued together.

Figure l in the accompanying drawings is an elevation of a slate-t`rame with my improvements. Fig. 2 shows the several parts of the joint of the frame separately in different posi' tions.

In these drawings, A is a slate, B B the sides, and C C the ends, of the frame, all of which are grooved to receive the edges ofthe slate A. rEhe ends of the end bars, C C, are cut to a miter or an angle of forty-tive degrees, as shown in the drawings, and then grooved, as shown at D, Fig. 2. The side bars, B B, are also cut to a miter, with a tongue, E, to tit the groove D when the frame is put together. The mitered ends of both the side and end bars are bored for the dowel F, which is tted to the holes in the bars, so that when the dowel and the ends of the bars are glued and pressed together a strong joint is formed in the frame.

In making these frames, the twojoints which are diagonally opposite to each other should be put together last.

My improved joint is very strong and durable, and makes a neat finish when completed.

I claim- A slate-frame when constructed with a miter-joint, tongue and groove, and secret dowelpin, substantially as described.

FRANCIS SHENTON.

NVitnesses:

HARRISON Evans, L. D. KRAUSE. 

